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    <div class="refentry" id="glGetVertexAttrib">
      <div class="titlepage"/>
      <div class="refnamediv">
        <h2>Name</h2>
        <p>glGetVertexAttrib — Return a generic vertex attribute parameter</p>
      </div>
      <div class="refsynopsisdiv">
        <h2>C Specification</h2>
        <div class="funcsynopsis">
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">void <strong class="fsfunc">glGetVertexAttribfv</strong>(</code>
              </td>
              <td>GLuint <var class="pdparam">index</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLenum <var class="pdparam">pname</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLfloat *<var class="pdparam">params</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">void <strong class="fsfunc">glGetVertexAttribiv</strong>(</code>
              </td>
              <td>GLuint <var class="pdparam">index</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLenum <var class="pdparam">pname</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLint *<var class="pdparam">params</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">void <strong class="fsfunc">glGetVertexAttribIiv</strong>(</code>
              </td>
              <td>GLuint <var class="pdparam">index</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLenum <var class="pdparam">pname</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLint *<var class="pdparam">params</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">void <strong class="fsfunc">glGetVertexAttribIuiv</strong>(</code>
              </td>
              <td>GLuint <var class="pdparam">index</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLenum <var class="pdparam">pname</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLuint *<var class="pdparam">params</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
        </div>
      </div>
      <div class="refsect1" id="parameters">
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>index</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>Specifies the generic vertex attribute
            parameter to be queried.</p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>pname</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>Specifies the symbolic name of the vertex
            attribute parameter to be queried. Accepted values are
            <code class="constant">GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING</code>,
            <code class="constant">GL_VERTEX_ATTRIB_ARRAY_ENABLED</code>,
            <code class="constant">GL_VERTEX_ATTRIB_ARRAY_SIZE</code>,
            <code class="constant">GL_VERTEX_ATTRIB_ARRAY_STRIDE</code>,
            <code class="constant">GL_VERTEX_ATTRIB_ARRAY_TYPE</code>,
            <code class="constant">GL_VERTEX_ATTRIB_ARRAY_NORMALIZED</code>,
            <code class="constant">GL_VERTEX_ATTRIB_ARRAY_INTEGER</code>,
            <code class="constant">GL_VERTEX_ATTRIB_ARRAY_DIVISOR</code>, or
            <code class="constant">GL_CURRENT_VERTEX_ATTRIB</code>.</p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>params</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>Returns the requested data.</p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1" id="description">
        <h2>Description</h2>
        <p><code class="function">glGetVertexAttrib</code> returns in
    <em class="parameter"><code>params</code></em> the value of a generic vertex
    attribute parameter. The generic vertex attribute to be queried
    is specified by <em class="parameter"><code>index</code></em>, and the parameter
    to be queried is specified by <em class="parameter"><code>pname</code></em>.</p>
        <p>The accepted parameter names are as follows:</p>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <code class="constant">GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING</code>
              </span>
            </dt>
            <dd>
              <p>
                </p>
              <p> <em class="parameter"><code>params</code></em> returns a
            single value, the name of the buffer object currently bound to
                    the binding point corresponding to generic vertex attribute array 
                    <em class="parameter"><code>index</code></em>. If no buffer object is bound, 
                    0 is returned. The initial value is 0.</p>
            </dd>
            <dt>
              <span class="term">
                <code class="constant">GL_VERTEX_ATTRIB_ARRAY_ENABLED</code>
              </span>
            </dt>
            <dd>
              <p>
                </p>
              <p> <em class="parameter"><code>params</code></em> returns a
            single value that is non-zero (true) if the vertex
            attribute array for <em class="parameter"><code>index</code></em> is
            enabled and 0 (false) if it is disabled. The initial
            value is <code class="constant">GL_FALSE</code>.</p>
            </dd>
            <dt>
              <span class="term">
                <code class="constant">GL_VERTEX_ATTRIB_ARRAY_SIZE</code>
              </span>
            </dt>
            <dd>
              <p>
                </p>
              <p> <em class="parameter"><code>params</code></em> returns a
            single value, the size of the vertex attribute array
            for <em class="parameter"><code>index</code></em>. The size is the
            number of values for each element of the vertex
            attribute array, and it will be 1, 2, 3, or 4. The
            initial value is 4.</p>
            </dd>
            <dt>
              <span class="term">
                <code class="constant">GL_VERTEX_ATTRIB_ARRAY_STRIDE</code>
              </span>
            </dt>
            <dd>
              <p>
                </p>
              <p> <em class="parameter"><code>params</code></em> returns a
            single value, the array stride for (number of bytes
            between successive elements in) the vertex attribute
            array for <em class="parameter"><code>index</code></em>. A value of 0
            indicates that the array elements are stored
            sequentially in memory. The initial value is 0.</p>
            </dd>
            <dt>
              <span class="term">
                <code class="constant">GL_VERTEX_ATTRIB_ARRAY_TYPE</code>
              </span>
            </dt>
            <dd>
              <p>
                </p>
              <p> <em class="parameter"><code>params</code></em> returns a
            single value, a symbolic constant indicating the
            array type for the vertex attribute array for
            <em class="parameter"><code>index</code></em>. Possible values are
            <code class="constant">GL_BYTE</code>,
            <code class="constant">GL_UNSIGNED_BYTE</code>,
            <code class="constant">GL_SHORT</code>,
            <code class="constant">GL_UNSIGNED_SHORT</code>,
            <code class="constant">GL_INT</code>,
                        <code class="constant">GL_INT_2_10_10_10_REV</code>,
            <code class="constant">GL_UNSIGNED_INT</code>,
            <code class="constant">GL_FIXED</code>,
            <code class="constant">GL_HALF_FLOAT</code>, and
            <code class="constant">GL_FLOAT</code>. The initial value is
            <code class="constant">GL_FLOAT</code>.</p>
            </dd>
            <dt>
              <span class="term">
                <code class="constant">GL_VERTEX_ATTRIB_ARRAY_NORMALIZED</code>
              </span>
            </dt>
            <dd>
              <p>
                </p>
              <p> <em class="parameter"><code>params</code></em> returns a
            single value that is non-zero (true) if fixed-point
            data types for the vertex attribute array indicated
            by <em class="parameter"><code>index</code></em> are normalized when
            they are converted to floating point, and 0 (false)
            otherwise. The initial value is
            <code class="constant">GL_FALSE</code>.</p>
            </dd>
            <dt>
              <span class="term">
                <code class="constant">GL_VERTEX_ATTRIB_ARRAY_INTEGER</code>
              </span>
            </dt>
            <dd>
              <p>
                </p>
              <p> <em class="parameter"><code>params</code></em> returns a
            single value that is non-zero (true) if fixed-point
            data types for the vertex attribute array indicated
            by <em class="parameter"><code>index</code></em> have integer data types, and 0 (false)
            otherwise. The initial value is
            0 (<code class="constant">GL_FALSE</code>).</p>
            </dd>
            <dt>
              <span class="term">
                <code class="constant">GL_VERTEX_ATTRIB_ARRAY_DIVISOR</code>
              </span>
            </dt>
            <dd>
              <p>
                </p>
              <p> <em class="parameter"><code>params</code></em> returns a
            single value that is the frequency divisor used for instanced
            rendering. See <a class="citerefentry" href="glVertexAttribDivisor.xhtml"><span class="citerefentry"><span class="refentrytitle">glVertexAttribDivisor</span></span></a>.
            The initial value is 0.</p>
            </dd>
            <dt>
              <span class="term">
                <code class="constant">GL_CURRENT_VERTEX_ATTRIB</code>
              </span>
            </dt>
            <dd>
              <p>
                </p>
              <p> <em class="parameter"><code>params</code></em> returns four
            values that represent the current value for the
            generic vertex attribute specified by index. The initial value
            for all generic vertex attributes is (0,0,0,1).</p>
            </dd>
          </dl>
        </div>
        <p>All of the parameters except <code class="constant">GL_CURRENT_VERTEX_ATTRIB</code>
    represent state stored in the currently bound vertex array object. If the zero object 
        is bound, these values are client state.</p>
      </div>
      <div class="refsect1" id="notes">
        <h2>Notes</h2>
        <p>If an error is generated, no change is made to the
    contents of <em class="parameter"><code>params</code></em>.</p>
      </div>
      <div class="refsect1" id="errors">
        <h2>Errors</h2>
        <p><code class="constant">GL_INVALID_VALUE</code> is generated if
    <em class="parameter"><code>index</code></em> is greater than or equal to
    <code class="constant">GL_MAX_VERTEX_ATTRIBS</code>.</p>
        <p><code class="constant">GL_INVALID_ENUM</code> is generated if
    <em class="parameter"><code>pname</code></em> is not an accepted value.</p>
      </div>
      <div class="refsect1" id="associatedgets">
        <h2>Associated Gets</h2>
        <p><a class="citerefentry" href="glGet.xhtml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a>
    with argument <code class="constant">GL_MAX_VERTEX_ATTRIBS</code></p>
        <p><a class="citerefentry" href="glGetVertexAttribPointerv.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetVertexAttribPointerv</span></span></a>
    with arguments <em class="parameter"><code>index</code></em> and
    <code class="constant">GL_VERTEX_ATTRIB_ARRAY_POINTER</code></p>
      </div>
      <div class="refsect1" id="versions">
        <h2>API Version Support</h2>
        <div class="informaltable">
          <table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
            <colgroup>
              <col style="text-align: left; "/>
              <col style="text-align: center; " class="firstvers"/>
              <col style="text-align: center; " class="lastvers"/>
            </colgroup>
            <thead>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; ">
                 
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; " colspan="2">
                <span class="bold"><strong>OpenGL ES API Version</strong></span>
            </th>
              </tr>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>Function Name</strong></span>
            </th>
                <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>2.0</strong></span>
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; ">
                <span class="bold"><strong>3.0</strong></span>
            </th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                  <code class="function">glGetVertexAttribfv</code>
                </td>
                <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
                <td style="text-align: center; border-bottom: 2px solid ; ">✔</td>
              </tr>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                  <code class="function">glGetVertexAttribiv</code>
                </td>
                <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
                <td style="text-align: center; border-bottom: 2px solid ; ">✔</td>
              </tr>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                  <code class="function">glGetVertexAttribIiv</code>
                </td>
                <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
                <td style="text-align: center; border-bottom: 2px solid ; ">✔</td>
              </tr>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; ">
                  <code class="function">glGetVertexAttribIuiv</code>
                </td>
                <td style="text-align: center; border-right: 2px solid ; ">-</td>
                <td style="text-align: center; ">✔</td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
      <div class="refsect1" id="seealso">
        <h2>See Also</h2>
        <p><a class="citerefentry" href="glBindAttribLocation.xhtml"><span class="citerefentry"><span class="refentrytitle">glBindAttribLocation</span></span></a>,
    <a class="citerefentry" href="glBindBuffer.xhtml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>,
    <a class="citerefentry" href="glDisableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glDisableVertexAttribArray</span></span></a>,
    <a class="citerefentry" href="glEnableVertexAttribArray.xhtml"><span class="citerefentry"><span class="refentrytitle">glEnableVertexAttribArray</span></span></a>,
    <a class="citerefentry" href="glVertexAttrib.xhtml"><span class="citerefentry"><span class="refentrytitle">glVertexAttrib</span></span></a>,
    <a class="citerefentry" href="glVertexAttribDivisor.xhtml"><span class="citerefentry"><span class="refentrytitle">glVertexAttribDivisor</span></span></a>,
    <a class="citerefentry" href="glVertexAttribPointer.xhtml"><span class="citerefentry"><span class="refentrytitle">glVertexAttribPointer</span></span></a></p>
      </div>
      <div class="refsect1" id="Copyright">
        <h2>Copyright</h2>
        <p>
            Copyright <span class="trademark"/>© 2003-2005 3Dlabs Inc. Ltd. 
            Copyright <span class="trademark"/>© 2010-2014 Khronos Group. 
            This material may be distributed subject to the terms and conditions set forth in 
            the Open Publication License, v 1.0, 8 June 1999.
            <a class="link" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
        </p>
      </div>
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